<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Error: 404</title>
</head>
<style>
  .main {
    margin: auto;
    position: absolute;
    text-align: center;
    width: 500px;
    height: 500px;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
  }
</style>
<body>
<div class="main">
  <h1>404 Not Found</h1>
  <HR style="width: auto;height: 2px;" color=#987cb9>
  <h3>ERROR CODE: 404</h3>
  <h3>Not Found</h3>
</div>
</body>
</html>